Shedding motion



March 19,1935. e. GOODLINE 1,995,146

SHEDDING MOTION Filed March 22, 1932 5 Sheefcs-Sheet 1 INVENTOR, GwrqeGo clltnc,

n BY HIS ATTORNE March 19, 1935. ca. GOODLINE SHEDDING MOTION FiledMarch 22,- 1932 3 Sheets-Sheet 2 INVENTOR, Geor e Goodl zlne,

BY HIS ATTORNE 'March 19, 1935. G. GOODLINE SHEDDING MOTION Filed March22, 1952 5 Sheets-Sheet s ill-III INVENTOR, enlarge Goodhlnc,

BY HIS ATTORN Patented Mar. 19,1935 I I l I UNITED; STATES, PATENT iOFFICE t I 1,995,146-v V sHEDDING MOT ON George Goodline, Pawtucket, R.L7 7 Application March 22; 1932, Serial No; 600,390

' -2 clai s.- (01. 139-74 v "The object of this invention is toimprove'shedlateral disengagement from the, gear; When ding mechanism ofthe open-shed type for looms lverlia'rid hence shaft Sand its gears areoscilby reducing the power necessary to operate the lated the'kni-veswill obviously be given the mo]- same in effecting the shedding action;by minition ascribed to them, and in opposite directions mizing the jar,vibration and noiseincidenttosuch simultaneously. 5 operation, andespecially the jar on the harness I Theharness cords 16 may extend overguides and-hence on the warp; by avoiding movement or sheaves 17arranged in two-suitably spaced of any harness frame insuch manner thatthe horizontal rows on the arch 2 as usual anddown warp threads 'shiftedwill be shifted at one side to the harness frames or shafts A and eachtwo of the warp more than at the other; by insuring cords for a harnessframe are connected to the 10 that each. harness system will be quitestationary hook 18 of and pivoted to a yoke 19 at 19w which when atrest; and by obtaining movements of the (Fig. 5) straddles and forms abearing for a. harness cords which shall be direct or devoid rotary gear20'. Each such gear'meshes with a of shifting thereof" transversely ofthemselves; pair of upper and lower racks 21 and 22. Each suchas happensin a dobby due to the pivoting three intergeared 'e1ements202122arecon'' 5 mbvementoi the cord-actuating levers. Afurfined asfa unit to av'erticalIplane by the interther object is to provide simple andeificientmeshing portions of--21 on the one. hand and means for rotatingstep by. step. the cylinder of 20-22 'onthe other (Fig. 5) beingreceived'in apattern mechanism useful'in the control of a theguideway'between two offth'e parallel bars 20 shedding mechanism.23,0fa'grid, such bars being afiixed at their'ends 2 In the drawings, toend bars 1a of the frame andcross-bars 1b Fig.1 is a plan of theshedding mechanism; thereof, bars 23 and 1a and 1b in effect forming 2.a side elevation; parts of the'fixed'structure or frame. The racks,Figs. 3' and 4 are longitudinal vertical "secas will appear, are to bereciprocated longituditions'. on lines 3-3 and 4- 1, respectively, Fig.1; nally, thereby to rotate and roll the gears and 25 and i hence movethe two harness cords and'corre Fig. 5 is a section on line 5-5', Fig.3. spending harn'essframe, and. to prevent unde- A suitable frame 1 isadapted to be afiixed to sirable tilting thereof there may be'otherbars'1c the arch 20f the loom frame and the sides of this and ldto guide tem. The right hand end of frame have the-horizontalupper and'lowerslots" each rack 21; 22 has a hook 21a (21b)'pivote d to 30 3 in whichmove back and forth the upperand move in a vertical plane and adapted tocatch lower knives or actuators 4 and-'5. The motion Ov th n V S'Ol atuators 4 and hi p v y, of each such knife is oscillatory and such thatthus to up the rackv Wi hi knife, h ow (here) the near ends thereof havegreater ex"- pling having a depending arm 23a (24a). tent of movementthan their far ends. This is In the appe ed claims I treateach frame A,35

obtained from an oscillated shaft 6; journaled in ts C d 16 a t y 19flfia ss; and the theframe and having fixed thereon between the, l m nt0 effect a fl lev l and th framefsides two gears 7' and 8 (the nearerone a ks 1, 22 a pa of a l ory tem 7 of which is of thegreaterdiameter)andthrough which at each side of the PiVOt-CORHBQHOII b0 an upper and a lower pair of racks 9 and 10; the tween'the element 20and yoke lQ isadapted' to 4 1 upper pair being pivoted to the ends of'knife abut the frame at 1a-1a to limit the movement or'actuator 4 andthe lower pair to the ends of t ha n he direction inwhich it 'is knifeor actuator 5 and each-rack having a pronormally u g d, S jec to ts Wht; d the jecting portion thereof at its other endpenehooks' orcouplings 21a and 2111 as disconnective trated and therefore guided bya-horizontal rod coupling means. t

11 supported by and inward of the side of the At 25 is fulcrumed in theframe a series of bellframe and in effect a part of the frame (see Fig;crank controller levers26 each having a'weighted 4). At the near side ofthe frame 'shaftfi has horizontal arm and an upstandin a m hav afiixedthereon another gear 12- t (Fig. 2) upon two lugs 606621 ag n O e of thhook arms wh rests d it hi h e he a, rack 13 23a (24a); in such mannerthat the'lever tends to 50 which is reciprocated'from some going part ofhold the .correspondinghook, which otherwise the loom through abellcrank lever 14, rack 13 tends tofall into engagement with the knife,elebeing held in engagement'with this gear by a vated clear of thesameyasin Fig. 3. The hooks roller 15 journaled in the frame andperipherally are graduated in length '(Fig. 1)' for a purpose-to vgroovedto receive the rackandconfine it against appear, v g 55 Eachlever 26 has its horizontal arm resting on a pattern chain 27 rotatingwith the cylinder 28.

According as, in the known way, presence of a pin 27a of the chain underany lever 26 elevates the latter or'absence of a pin allows the lever tofall, so the corresponding hook will be in or out of position to becaught and thereupon move forward and back with the corresponding knifeor actuator.

Operation.The weight of each harness frame tends to maintain the tworacks 2land 22 appertaining thereto back, or against bars la (all theracks being shown back in the drawings) If as-- to any one harness frameone of its racks is pulled forward (to the right) the harness frame willbe lifted, as an incident of the-lever action of the correspondingelement which is here a gear and hence rolls on the two racks; if on thereturn of that rack the other rack is left'back the harness frame willfall, but if on such return of the first, rack the other rack ismovedforward the gear 20 will remain in its forward position rolling onthe two racks idly, or without linear progression in either direction,wherefore the harness frame will remain raised. '-In short, once aharness frame is raised it will be allowed to fall only when the rackwhich last moved forward moves back without the other rack being movedforward. The calling of the racks is done by the controller lever 26,only one such device being required for each two racks, upper and lower.That is to say, if said lever, having called one rack (i. e., permittingits hook 21a, 'or' 212) to fall and catch a knife), is allowed to returnto hook-lifting position before the other knife assumes its backwardlimit, the harness frame will.

have been raised and immediately allowed to fall; if it remains in"calling position on one or'rnore return movements of the'knives theharness frame will correspondingly remain raised, fallingwhen the knifewhich last moved to the right returns with the controller lever in thehook-elevating position, or that shown. Since the knives oscillate, orat itsoutward limit each stands angularly related to its position at theinward limit, the desired convergence of the warp shed will result.In-the present case each knife is obliqueto the paths of reciprocationof the racks 21 and- 22,wherefore 'the.hooks are graduated. in length asstated.

The leverage present in the elements 20 obviously reduces veryappreciably the power necessa'ry to lift the harness and appreciablyreduces the jar, vibrationand noise incident to the operation; eachharness-including system stands perfectly stationary when at restbecause it is then supported (at la) directly by the fixed structure;and the pull on each harness cord may be exerted, as shown, in directalinement with tion to clear the knives and is normally urged (here bygravity) to position to be caught:there-. by. vHowever, I do not wish.to be limited to this rather than the reverse condition. A novel'feature of my invention is as follows: Since the arms or projections23a of the hooks project transversely of the paths of movement of thehooks with their racks it is'possible to have the movement of the hooksby lever 26 depend on their said movement with the racks, rather than onmovement transmitted to or permitted them by and incident to movement ofsaid lever; in short nice timing of the lever to have it cause movementof the hooks precisely at the instant one or the other knife is back isthus avoided. The pattern cylinder 28 may be rotated-step by step in anyknown way, but I prefer the following means for so rotating it:

A On faces facing lengthwise of the axis of the cylinder (here the innerand outer faces of a disk 29 on its shaft portion 28a) are twoequal-number sets of projections 30 and 30a in which those of each setare approximately equally spaced around-the cylinder axis and those ofone set are opposite the spacesbetween those of the other. 31 is anactuator reciprocated in' anyway, as from a segment 32 oscillating withlever li,

the actuator and segment having intermeshing teeth. This actuator. hasportions, as legs 31a, which straddle the shaft portion 28a (and may beguided thereby) and reach lengthwise of its reciprocating'path and arerespectively provided with two actuating projections 33 and 33a whichreach in opposite directions lengthwise of said shaftand are offsetfromeach otherlengthwise of said reciprocating path,'one being arranged toengage the first-named projections'(30) of the.

cylinder one after another in the movements of the actuator in onedirection and the other to engage'the second-named. projections (30a) ofthe cylinder one after another in the movements of the actuator in theother direction,thus to rotate thecylinder step by'step. Thus, in Fig.2, the actuator projection 33a, when the actuator last moved to theright, encountered that (rear) projection 3001. which was then in theposition of theleft lower front projection 30, andturned the cylinder totherposition shown; when the actuatornow moves to the left actuator.projection 33 will encounter the right upper (front) projection 30 andturnthe cylinder the same distance as before (here a5 degrees) and inthe same direction; and so on. To hold the cylinder in each'po'sition towhich it is thus turned it may have the usual octagonal disk, 34againstwhich a spring-pressed lever. 35 is held (Fig. 3).

Since the coupling changes must occur when one knife or the other isback (or at the left) the structure M -32, from the lever portion 14 ofwhich the movement of the knives is derived, must turn thecylinderonestep on each half-cycle of its complete (back-and-forth)movement.

.Having thus fully described my invention what Iclaimis:

1. In combination, with supporting structure, a pair of backwardly andforwardly moving actuators,'a,pair of members slidable backwardly andforwardly in and having their backward movement limited bysaidstructure, a floating lever operatively'connecting said members, a harness connected tosaid lever between said members and pulling backwardlyon the lever, hooks projecting forwardly from said members and re-,spectively pivoted thereto and movable in one direction to engage and inthe otherto clear the respective knives andnormally urged in one direction, amovable hook-moving element normally urged into. the paths. ofbackward movement of both hooks and adapted to move the hook which isbackwardlymoving clear of the corresponding engaged with the teeth ofand in the guideways of two of the levers, one, from each set, a harnessconnected to each lever between the ends of the latter, reciprocatingactuators, one for each set of racks, each rack having a couplingmovable into and out of coupled relation to the corresponding actuator,and pattern-controlled means controlling the movements of the couplings.

GEORGE GOODLINE.

